Why zone for get-credentials?

[Anatoli Babenia]

I've created a single cluster in single zone. Why I am asked to specify zone in get-credentials?
Help mentions it is optional parameter https://cloud.google.com/sdk/gcloud/reference/container/clusters/get-credentials

✗ gcloud container clusters get-credentials quickstart
ERROR: (gcloud.container.clusters.get-credentials) One of [--zone] must be supplied: Please specify zone

[Zachary Newman]

Though in your particular case, the name of the cluster *is* sufficient to disambiguate, it's impossible to know that in general–you might have a cluster with the same name in multiple zones. It would slow down the command if we did another round-trip to check uniqueness, not to mention opening up the possibility of race conditions.

The --zone flag is listed as optional because it's only necessary if you don't have the compute/zone property set. But the zone of the cluster needs to be specified by property or by flag.

I hope that clarifies things!

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[Anatoli Babenia]

Did I understood you right that for each cluster in each zone I need to get separate credentials?

Second question - where should I set compute/zone property to make --zone flag unnecessary?

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Anatoli Babenia

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[Zachary Newman]

Answered inline:

On Fri, Sep 15, 2017 at 10:47 AM, Anatoli Babenia <ana...@rainforce.org> wrote:

Did I understood you right that for each cluster in each zone I need to get separate credentials?

Yes, the credentials are per-cluster. 

Second question - where should I set compute/zone property to make --zone flag unnecessary?

Run `gcloud config set compute/zone MY_ZONE`.